Audi S3 8V 2.0 TFSI Quattro Fuel Tank Breather Valve Petrol 06H906517AE

Audi S3 8V 2.0 TFSI Quattro Fuel Tank Breather Valve is a precision fuel system component, designed by Audi to ensure stable operation of the TFSI unit and proper fuel vapor evacuation. This component supports correct control of the fuel vapor circuit, which translates into smooth engine operation and compliance with exhaust emission requirements.

Specifications and technical data

• SKU: 06H906517AE
• Mark: Audi
• Condition: Used
• OEM Part Number: 06H906517AE
• Substitutable numbers: 06H906517AE, 06H 906 517 AE
• Fuel type: Petrol
• Category: Other Engine Parts

Function of the fuel tank breather valve in the Audi S3 8V 2.0 TFSI

The fuel tank breather valve in the 2.0 TFSI petrol engine is responsible for the controlled routing of fuel vapors from the tank ventilation system to the intake manifold. A properly functioning component:

• stabilizes the mixture composition in the petrol-powered engine,
• limits the uncontrolled release of fuel vapors into the atmosphere,
• supports correct engine control unit operation under various load conditions,
• reduces the risk of starting issues and rough idling.

For TFSI units, where the fuel system is precisely electronically controlled, a functional fuel tank breather valve is essential for maintaining predictable throttle response and consistent operating parameters.

Benefits of using an original Audi component

Choosing a fuel tank breather valve from the original Audi line means maintaining factory flow and control characteristics. As a result:

• the engine control unit operates within the parameters specified by the manufacturer,
• the risk of diagnostic errors related to the EVAP system is reduced,
• compatibility with the factory equipment of the 2.0 TFSI petrol engine is maintained.

A used component of this type can be an attractive solution for vehicle maintenance when you want to preserve the original specification while optimizing repair costs.

Application in the petrol fuel system

In engines powered by petrol, the fuel vapor evacuation system is an important supplement to the injection system. The fuel tank breather valve works in conjunction with:

• the fuel tank and its ventilation,
• lines leading fuel vapors to the intake manifold,
• the engine control system, which determines when to open and close the valve.

A functional valve helps limit fluctuations in mixture composition, which is important both for the refinement of the TFSI unit and for maintaining stable combustion parameters over the long term.

Integration with other Audi components

In modern Audi models, such as the S3 8V, the petrol fuel system is closely linked to emission control systems and advanced control electronics. The fuel tank breather valve interacts with sensors, the intake system, and the engine control unit, which is why its selection affects:

• correct data interpretation by the control unit,
• stability of operating parameters during dynamic driving,
• maintenance of proper emission levels in daily use.

For users interested in the differences in design and equipment between sports versions and standard Audi models, a valuable source of knowledge is the article Audi RS vs other models – what is hidden under the hood and chassis?, which discusses, among other things, the specifics of power units and components.

Service expansion and selection of related elements

If you are planning a comprehensive repair or upgrade of the fuel supply area in your Audi and need other elements from the same group, such as control valves, ventilation system elements, or auxiliary fuel system components, check the available parts in the Other Audi category.

When planning service, it is worth considering the condition of the entire fuel system so that the replacement of the fuel tank breather valve goes hand in hand with the diagnostics of lines, connections, and cooperating components. This approach helps reduce the number of service downtimes and ensures more predictable vehicle operation over a longer period.